watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2286] Modules linked in: irq event stamp: 44998089 hardirqs last enabled at (44998088): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (44998088): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (44998089): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (44998089): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (1186): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1190): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 2286 Comm: aoe_tx0 Not tainted 6.9.0-rc6-syzkaller-g78186bd77b47 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 sp : ffff80009d9d77d0 x29: ffff80009d9d77d0 x28: ffff0000cb18acf0 x27: ffff0000cb18ac80 x26: ffff0000db814cc8 x25: ffff0000c2bc2020 x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000000 x21: dfff800000000000 x20: ffff800093a0a2e0 x19: 0000000000000000 x18: ffff80009d9d74a0 x17: 0000000000033ba3 x16: ffff800080334a70 x15: 0000000000000001 x14: 1ffff0001274145c x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083c704d0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008afffb40 x0 : ffff800124ff9000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:670 [inline] uart_write_room+0x140/0x2d0 drivers/tty/serial/serial_core.c:642 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:69 handle_tx+0x120/0x604 drivers/net/caif/caif_serial.c:226 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282 __netdev_start_xmit include/linux/netdevice.h:4903 [inline] netdev_start_xmit include/linux/netdevice.h:4917 [inline] xmit_one net/core/dev.c:3531 [inline] dev_hard_start_xmit+0x27c/0x938 net/core/dev.c:3547 __dev_queue_xmit+0x1678/0x33fc net/core/dev.c:4341 dev_queue_xmit include/linux/netdevice.h:3091 [inline] tx+0x9c/0x1cc drivers/block/aoe/aoenet.c:62 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1229 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc6-syzkaller-g78186bd77b47 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff80008ee17cf0 x29: ffff80008ee17cf0 x28: dfff800000000000 x27: 1ffff00011dc2fac x26: ffff80008ee9d000 x25: 0000000000000000 x24: 0000000000000001 x23: 1ffff00011dd3aad x22: ffff80008ee9d568 x21: 0000000000000000 x20: ffff80008eec5080 x19: ffff8000802e20d4 x18: 1fffe000367b8d96 x17: ffff80008ee9d000 x16: ffff8000802e1998 x15: 0000000000000001 x14: 1fffe000367baaf9 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000004f39b x7 : ffff80008047ad28 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008ae88060 x2 : 0000000000000000 x1 : ffff80008afffb40 x0 : ffff800124fd5000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:332 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:430 rest_init+0x2dc/0x2f4 init/main.c:739 start_kernel+0x3f0/0x4f0 init/main.c:1081 __primary_switched+0x84/0x8c arch/arm64/kernel/head.S:243